Checks
| Action
|
DEFINITION: The
engine delivers less than expected power. There is little or no increase
in speed when the accelerator pedal is partially applied.
|
Preliminary Checks
|
| • | Compare the customer vehicle with a similar unit. Verify the customer
concern. |
| • | Remove the air filter and check for dirt or for a restriction. |
|
Fuel
System Checks
|
| • | Check for a restricted fuel filter, for contaminated fuel, or
for improper fuel pressure. Refer to
Fuel System Diagnosis
. |
|
Exhaust
System Checks
|
| • | Check the exhaust system for a possible restriction. Refer to
Restricted Exhaust
in Engine Exhaust. |
| • | Inspect the exhaust system for damaged or collapsed pipes. Inspect
the muffler for heat distress or for a possible internal failure. |
|
Additional
Checks
|
| • | Check the control module grounds for being clean, tight, and in
their proper location. |
| • | Check the exhaust gas recirculation (EGR) valve for being open
or partially open all the time. |
| • | Check the A/C operation. |
| • | Check the knock sensor (KS) system. |
|
Engine
Mechanical Check
| Check the engine for the proper operation of the following items:
| • | An incorrect or worn camshaft |
|
